Stud applying apparatus



16, 1939. E. J. sABol. 2,158,763

' s'run APPLYING APPARATUS Filed Aug. 2, 1957 2 Smets-sheet 1.

www I ERNEST J QBOL May 16, 1939. E. .nA sABoL i STUD APPLYING APPARATUS Filed Aug. 2, 1937 2 Sheets-Sheet 2 EEA/E57 .f 5,4150@ Patented May 1e, ieee OFFHCE STUD APPLYINGv APPARATUS Application August 2, 1937, Serial No. 157.049 l 2 Claims.

This invention is a stud applying apparatus which is particularly intended to apply stud terminal ril bonds by means of an impacting tool powered by an explosive. l

Referring to the accompanying drawings:

Figure l is a top view of the apparatus.

Figure 2 is a side view.v

Figure 3 is a longitudinal section taken from the line III- 111' in Figure 2.

Figure 4 is an end view of a detail shown by Figures l and 2.

Figure 5 is a view similar to Figure 3 `but showing a modication.

Figure 6 is a cross-section taken from the line VI-V'I in Figure 5. n

Figure 'I is a modification of details shown by Figures l and 2.

A portion of the head of the rail R and the stud terminal T of the bond to be applied toA this rail are illustrated by broken lines in Figures 3 and 5, it being understood that this terminal provides a stud S which is to be expandedin a hole in the rail head.

A member Il! has an end constructed to t closely around this terminal and against the rail adjacent the hole in which the stud of the terminal is tted. An opening II is formed in this end so as to register with the part oi the terminal surrounding the stud, and the member I Il provides a passage I2 leading to this opening.

The member I0 is revolubly mounted by a cylinder I3 which is in axial alignment with the passage I2, anda pistonT is carried inthis cylinder and itself mounts an impacting tool i5 which extends towards the opening Il, this tool being constructed to travel through the passage I2 and having an end I6 constructed to passl through the opening II. The arrangement is such that when the piston I4 is reciprocated to its forwardmost position the end I8 of the impacting tool I5 will passa through the opening I I so as to strike the portion of the terminal with which the latter registers. w

A duct I'I opens into the vback end of the cylinder I3 and is chambered to receive a blank` cartridge I8 which may be iired by any suitable mechanism. This last provides a means-for iir- (Cl. 'J8-49) the terminal T. The end of the cylinder most adjacent the rail R may be provided with a flange 2i which holds this end of the compression spring 20, and the other end of this cylinder may be enlarged as at 22 so as to prevent the cylinder passing' through the holder I9. This enlarged portion 22 may be of sulcient length to position a heavy washer 23 made of some suitable shockabsorbing material, such as compounded rubber, cork, etc.

Figures 1 and` 2 also illustrate a conventional ring mechanism 26 of any suitable character, it being understood that the only function of this is to iire the cartridge I8.

In use, the apparatus is positioned in the manner -shown by Figures 1 and 2, the impacting action of the tool I5 being obvious. The operator holds one hand against-the holder I9, and the spring 20 allows the cylinder I3 to reciprocate backwardly when the charge is red and thus relieve the operator of a great part of the recoil. The washer 23 functions to further absorb the recoil and thus further cushion the shock transmitted to the operator's hand.

The member Il l which tightly iits about the terminal T and against the adjacent portions of the rail R functions to protect the operator of the apparatus against the possibility of being injured by ying bits of metal. Further, it functions to center the impacting tool I5 so that its end I6 strikes at exactly the right point. Since this member III is revolubly associated with the cylinder I3, it may be turned to permit the use of the apparatus with either right or left hand terminals. f

The modification shown by Figure 5 is prac" tically thesame as that shown by Figure 3 excepting ,that the end of the member I0 is provided'with an opening Ila which registers with*A only a portion of the terminal and with an adjacent portion of'the rail. The impacting tool I5 is practically the same excepting that it has a smaller end I6 which strikes only those parts with which the opening II registers. This modiication is advanced primarily to show that the apparatus is applicable to various methods of applying stud terminal bonds. The modication` shown by Figure 7 consists in substituting a more widely iianged Vmember 2I for the ilanged part 2l shown by Figure 3.

A series of screws 25 are threaded into the holder I9 and reciprocatively pass through openings in this iianged member 2 I, and a series of springs 2lia encircle these various screws 25. These Honing if@ the stud oi said terminal is iitiued. including a member having an end constructed to /ilt about the head .of `said terminal opposite said lstud and against said rail adjacent said hole, an openlng being formed in said end so as to register with at least a portion of said head, and said member providing a passage leading to said opening, a cylinder revolubly mounting said member with said passage in axial alignment therewith', a. piston in said cylinder, an impacting tool powered by said piston and extending toward said opening, said tool working in said passage and having an end for striking'said end through said opening, and means' for ring an explosive charge in said cylinder behind said piston, said apparatus having a relatively reciprocative holder and being provided with elastic means for restraining reciprocation of said apparatus respecting said holder, said elastic means functhe recoil resulting `when an e' is died in said cylinder behind explosive said eiseres 2. Apparatus for am a rail bond stud terminal to a rail provided with a hole in which tthe stud of said terminal is iitted, including a. member having an end constructed to it about 'the head of said terminal opposite said stud and against said rail adjacentsaid hole, an opening being formed in said end so as to` register with at least a portion of said head, and said member providing a passage leading to said opening. a cylinder revolubly mounting said member with said passage in axial alignment therewithlr a. pistonin said cylinder, an impacting tool powered by said piston and extending toward said opening, said tool working in said passage and having an end,for striking saidy end through said opening, means for ring an explosive charge in said cylinder behind said piston, said apparatus being adapted to be manually'held during its operation, and including, for this purpose, a holder reciprocatively associatedwith said cylinder, elastic means for restraining relative reciprocation of said holder and said cylinder, and

shock absorbing material carried by said'holder y 

